Service-meter for telephone-lines.



No. 755,308, PATENTED MAR.22,1904,

F. .R. MoBERTY.

SERVICE METER FOR TELEPHONE LINES APPLICATION FILED mum, 1900. N0 MODEL.

Patented March 22, 1904.

UNITED STATES PATENT OFFICE.

FRANK R. MoBERTY, OF EVANSTON, ILLINOIS, ASSIGNOR TO THE WESTERNELECTRIC COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OF ILLINOIS.

SERVICE-METER FOR TELEPHONE-LINES.

SPEGIFICA TION forming part of Letters Patent No. 7 55,308, dated March22, 1904.

Application filed July 1 1900.

To aZZ whom it may concern:

Be a known that I, FRANK R. MOBERTY, a'.

- citizen of the United States, residing at'Evansa toll device, such asa service-meter and circuits therefor, associated with each line of atelephone system, whereby a charge may be made for each use ofasubscribers telephoneline in which the subscriber is actually placed incommunication with the party called for. I

A further object is to provide an automatically-operated signal at thesubstation of the telephone-line, whereby thesubscriber at that stationmay be informed when the connection called forhas been obtained and thecalled party has answered.

One feature of my invention consists of a magnet connected with atelephone-line at the substation thereof and blocking mechanismcontrolled by said magnet for rendering. inoperative the telephoneapparatus at the substation, whereby the use of such telephone apparatusmay be prevented, a source of current at the central office adapted toenergize said magnet, whereby said blocking mechanism may be actuated,means made operative V in completing connection between saldtelephone-line and another line for connecting said source of currentwith the line, a toll device at the substation adapted to be manuallyoperated, and a releasing appliance actuated I. in the operation of saidtoll device for counxteracting said blocking mechanism, wherebythesubstation apparatus may be made opera tive. I preferably provide anelectromagnetic switch atthecentral oflice for'controlling the 7application of the aforesaid source of current to the calling-line, saidelectromagnetic switch being controlled by a device responsive to theflow of current in the called line, so that when the-called subscribertakes his telephone from itsswitch-hook to respond to the call the deredinoperative.

Serial No. 23,729. (No model.)

change in the electrical condition of the called linethus produced willcause the actuation of said electromagnetic switch at the centraloffice, whereby the magnet at the calling-subscribers station isenergized to actuate the blocking mechanism aforesaid, and thecallingsubscribers telephone apparatus is thus ren- The callingsubscriber is therefore compelled to actuate his toll device in order torestore the operative condition of his telephone apparatus.

. A further feature of my invention consists in the provision of anelectromagnetic signalindicator at the substation of the-callingsubscriber, with a source of current and a switch associated with theoperators plug-circuit at the central office for controlling theapplica-v tion of current to said signal-indicator, whereby a signal maybe indicated at the substation by the operation of said switch. Theswitch at the central oflice may be operated electrically and controlledthroughthe agency of the telephone-switch at the called station, wherebya signal may be displayed at the callingstation when the calledsubscriber responds notifying the calling subscriber that the desiredconnection has been obtained and that he must actuate his toll devicein. order to use his telephone for conversation. The signalindicator atthe calling-station may be a target moved by the armature of the magnetwhich controls the blocking mechanism.

I will describe my invention more particu larly by reference to theaccompanying drawing, which is a diagram illustrating bymeans ofconventional symbols two telephone-lines extending from substations to acentral office, together with the central-ofl1ce apparatus forconnecting said lines together, the system being providedwith theservice-measuring apparatus of my invention and. the auxiliary signaldevice therefor.

The-subscribers apparatus at each of the substations A B is of the usualtype with the exception of the toll-counting device and its associatedmechanism for blocking or rendering inoperative the telephone apparatus.Each telephone-line consists of two limbs 1 2 terminating at the centraloffice in line-springs a (62, respectively, of a spring-jack a. Theusual line-signal is associated with each telephone-line at the centraloffice for indicating calls. A cut-off relay 6 is also associated witheach line, being connected in a grounded branch from the third contactor test-ring a of the spring-jack, said relay being adapted whenenergized to disconnect the line-signal apparatus from the line. Ananswering-plug cand a connecting-plug (Z are furnished at thecentral-ofiice switchboard G for connecting any two lines together, saidplugs being adapted to be inserted in the spring-jacks of the lines andhaving a complete circuit for telephonecurrents between them, saidcircuit being formed by conductors 3 4 and 5 6, which lead in pairs tothe poles of the battery 6 through the windings of a repeating-coil inthe usual manner. The conductors 4 and 6 include the magnet-windings ofsupervisory relays f g, which control,respectively, supervisorysignal-lamps f" 9. One pole of the battery 0 is grounded, and thesupervisory signal-lamps f g'sare included in conductors 8 9,respectively, leading from the other pole of said battery e tosleeve-contacts 0 (Z of plugs 0 (Z, respectively. These sleeve-contactsof the plugs register with the grounded test-rings a of thespring-jacks. Shunt-circuits 1O 11 are provided about the signal-lamps f9', said shuntcircuits being controlled by switch-contacts operated bythe supervisory relays f 9, respectively, When either of saidshunt-circuits is closed, its corresponding signal-lamp is therebydeprived of current. The conductors'5 6 of the plug-circuit terminate,respectively, in the tip and ring-contacts (/Z' (Z of the plug 0Z.Similarly the conductors 3 4 of the plug-circuit are normally connected.with the tip and ring contacts 0 c of the plug a. A double-pole switchit is provided, however, whereby the connections of the conductors 3 4with the contacts of the plug 0 may be reversed, said switch beingadapted to be operated by an electromagnet it. The magnet h is providedwith two windings. One of said windings, if, of low resistance, isincluded in series in the conductor 11, which shunts the signal-lamp gand is controlled by the su' pervisory relay g. The other winding, lb ofhigh resistance, is serially included in a conductor 12, which forms asecond shunt around the signal-lamp g and is controlled by therelay-armatu re Zn of the magnet la itself. When the supervisory relay gis energized, the effect is first to close the shunt 11 around thesupervisory signal-lamp, thereby causing the lamp to be deprived ofcurrent and the light extinguished. Since the shunt 11 thus closedincludes the winding 7& of the magnet h, said magnet will be energized,attracting its armature It and also operating the double-pole switch Itto reverse the connections between the battery 6 and contacts of theansweringplug 0. The armature it being drawn up closes the circuit 12,which includes the retaining-winding it of the magnet it, whereby saidmagnet is supplied with current and maintained energized independentlyof the circuit 11, controlled by relay 9.

Turning now to the apparatus at the substations of the system, I willdescribe in detail the apparatus at substation A. The apparatus at theother stations may be identical.

The toll device shown in the drawing is a connection-register orservice-meter and consists of a train of counting-wheels 2', including astar-wheel, the teeth whereof are adapted to be engaged by the palletsof an oscillating escapement-lever 76. The counting-train may thus bemoved step by step, a full beat or complete oscillation of the lever It'being necessary to advance the counting-train the full distance from onefigure of the dial to the next. A spring 1; is fastened to theactuating-lever Zr, tending to rock said lever in a clockwise directionto cause the initial movement of the escapement-pallets carried by saidactuatinglever. A subsequent movement of the lever Z: in a reversedirection will complete the registration. A manually-operated plunger orpush-key Z is associated with the actuatinglever A, whereby said levermay be moved in a contra-clockwise direction. The plunger Z preferablyis not mounted upon the actuating-lever, but is capable of movementindependently thereof and is normally maintained in its outer positionby means of a spring Z. The plunger Z preferably carries a movableswitch-contact Z which normally rests against a stationary contact Zengagement between said contact parts Z Z being broken when said plungerZ is pushed in to move the actuatinglever A: of the toll-counter. Thecontacts Z Z are serially included in the telephone-circuit, wherebysaid circuit is broken momentarily when the subscriber pushes in on theplunger Z to operate his toll-counter, the plunger moving back againunder the influence of spring Z to reestablish the circuit as soon aspressure is removed therefrom. The object of this arrangement is toprevent the subscriber from keeping the plunger Z permanently pushed inwith the design of preventing the operation of his toll-counter.

A polarized electromagnet p is associated with the toll-countingmechanism, the windings of said magnet being connected in the branch ofthe-line which leads through the subscribers telephonetalk'ing'apparatus. The winding of the'magnet is preferably shunted by acomparatively high non-ind uctiveresistance to diminish its impedance totelephonecurrents. This polarized magnet]? has a centrally-pivotedtilting armature m, which car ries a latch or detent m, adapted toengage and hold the end of the actuating-lever Zr; when the same hasbeen pushed in by the plunger Z. The armature 712 also carriesa'm'ovable target 11), adapted 'to be displayed in an opening in a 'withwhen the polarized armature m of the; -magnet is moved in'a clockwisedirection. When the actuating-lever k is pushed in by means of theplunger Z, the end of said lever is adapted to engage the latch m andseparate the same from the stationary contact m Further movement of thelever causes the same ment of the centrally-pivoted armature m in acontra-clockwise direction serves to raise the catch m from the end ofthe actuatinglever is, the lever as soon as it'is released from saidcatch being moved out from under the catch by the spring It; Acentralizing spring 0 serves to yieldingly maintain the armature m inacentralposition. To recapitulate, when the armature m is tilted in acontra-clockwise direction the catch m is lifted off the end of theleveris, so that said lever is drawn over by the spring 76 until it strikesthe end of the plunger Z.

This movement of the lever effects a half-registration of thecounting-train 7 The armature m is now free to move in a clockwisedirection and will make such a movement under the influence ofsuitably-d1- rected current flowing through the coils of the polarizedmagnet 19. Contact will then be established between the catch on and theconwhen closed to short-circuit the telephone apparatus at thesubstation, whereby such telephone apparatus may be renderedinoperative.

The use of the telephone apparatus at any substation to carryonconversation over the telephone-line may be elfectually prevented orblocked by the mechanism which is operated by the polarized magnet p,said magnet being adapted to be energized by current which may beapplied at the central oflice. In the particular system illustratedcurrent to operate the blocking mechanism at the substation is appliedthrough the agency of the electromagnetic switch h at the centraloffice,

' which switch is controlled by apparatus at the called station.

The operation of the system is as-follows:

Assuming that the subscriber at substation A desires to communicate withthe subscriber at substation B,'he takes his receiving-telephone fromits switch-hook and permits the telephone-switch to close the circuit ofthe.

' line in the usual manner,-providing a path for current in the linefrom the central source, 1

' which excites the-line-relay and causes the illumination of'theline-signal lamp. On seeing the-call-signal thus displayed the operatorinserts the answering-plug cof a pair of plugs into the answering-jack aof the calling line. This act of the operator closes a local circuitthrough the cut-off relay to remove the line-signal apparatus from thecircuit. At the same time the battery 6 of the plugcircuit is connectedin a bridge between the limbs 1 2 of the telephone-line by way of thecord -strands 3 4: of the plug-circuit. Since the'circuit of thetelephone-line is closed at the substation by the telephone-switch, thecircuit from battery 6 over the line is completed. This circuit includesthe winding of the supervisory relay f, which is included in said relayis energized and closes the shuntcircuit 10 about the supervisorysignal-lamp f, the signal-lamp remaining dark. The polarized magnet'pbeing included in the linecircuit at the substation A receives currentfrom battery 6, the circulation of current in the circuit being in the aproper direction to tip the armature m of said magnet in acontraclockwise direction, whereby the actuatingleased, as beforeexplained, and is drawn over by spring Z2, efiecting ahalf-registration. The central-oflice operator now communicates withsubscriber A by telephone in the usual manner and inquires the number ofthe station with which connection is desired. Upon receiving thisinformation she inserts the other or connecting plug (1 of the pair intothe spring-jack of the line wanted and signals the called station in theusual way. Upon connection of the plug d with the spring-jack of thecalled line circuit iscompleted from the grounded battery 6, through theconductor 9 and supervisory signal-lamp g',to the sleevecontact d of theplug d, and thence to ground by way of the called subscribers cut-offrelay. When the subscriber at the called station takes his telephonefrom its switch-hook to answer the call,thetelephone switch closes thecircuit of the called line, whereby the supervisory relay'g-in theconductor :6 of the plug-circuit receives current and :draws up itsarmature. The shunt-conductor 11, including the winding k of themagneth, is thus closed, energizing-said magnet. The resistance of thisshunt-conductor 11 is so low that the lamp g is deprived of current andis extinguished. The magnet h being excited draws up its armature it,thereby closingthe ing k whereby said magnet is continuously suppliedwith current as long as the plug 41 remains in the spring-jack of thecalled line. The excitation of the magnet h, which is thus consequentupon the removal of the telephone at the called station from its hook inresponse to the call, operates the double-pole switch h, reversing theconnection of battery 6 with the calling-line, and the reversal of thecurrent through the polarized magnet 10 at the the cord strand 4 of theplug-circuit, whereby lever is of the toll-counting mechanism isrecircuit'12, which includes the retaining-wind- ITO substation A of thecalling-line causes the armature m of said relay to tip in a clockwisedirection. This movement of the armature m accomplishes two results:First, it closes the short circuit 13 about the telephone apparat'us,rendering said apparatus inoperative and blocking communication betweenthe stations A and B, and, second, it moves the target a before theopening in the shield 11?. The display of the target it indicates to thecalling subscriber that the called party has answered and that he mustpush in on the plungerl to operate his toll-counter in order that he mayuse his telephone. When the plunger Z is pushed in, it completes theregistration previously initiated when the central-office operatorplugged into the line in answering the call and also releases the catchm from its contact of, thus breaking the short circuit 13 and permittingthe use of the telephone.

I claim as my invention 1. The combination with a calling and a calledline and switching apparatus for uniting them, of a toll device at thesubstation of the calling-line adapted for manual operation, a blockingdevice, a telephone-switch at the substation of the called line, meanscontrolled by said telephone-switch for setting the blocking device, anda releasing appliance actuated in the operation of the toll device forcounteracting or restoring the blocking device, substantially as setforth.

2. In atelephone-exchange system, the combination with a calling and acalled line extending from substations to a central oflice,

of link conductors at the central ofiice for uniting said lines, apolarized magnet connected with the calling-line and a signal-indicatoroperated thereby, a source of current, a reversing-switch at the centralofiice controlling the flow of current in the calling-line, a circuitfor operating said reversing-switch established in making connectionwith the called line, and a switch at the called station controllingsaid circuit; whereby the response of the called subscriber is indicatedby the display of said signal at the calling-station.

3. In a telephone-exchange system, the combination with a telephone-lineextending from a substation to a central ofiice, of an operatorsanswering-plug at the central oiiice for making connection with saidline in response to a call, a connecting-plug and a cord-circuit unitingthe same with the answering-plug, said connecting-plug being adapted tomake connection with another telephone-line, a magnet at thecalling-station connectedwith the telephone-line thereof, asignal-indicator operated by said magnet, a source of current, anelectromagnetic switch at the central ofiice for controlling the flow ofcurrent through said magnet, and a circuit for controlling saidelectromagnetic switch, established by connection of the connecting-plugwith the called line, substantially as set forth.

4. In a telephone-exchange system, the combination with twotelephone-lines extending from substations to a central-olficeswitchboard, of means at the central ofiice for connecting the linestogether, a signal-indicator at the substation of one of the lines,means controlled by a switch at the central ofiice for actuating saidsignal-indicator, electromagnetic mechanism controlled by the flow ofcurrent in the other line for operating said switch, and means at thesubstation of said last-mentioned line for determining the flow ofcurrent therein, substantially as set forth.

5. In atelephone-exchange system, the combination with twotelephone-lines extending from substations to a central-officeswitchboard, of an operators plug-circuit for connecting the linestogether in response to a call from substation of one of said lines, amagnet and means controlled by said magnet for interfering with thetransmission of telephonic voice-currents between the telephones at therespective stations, whereby telephonic communication between saidstations is prevented, a source of current adapted to energize saidmagnet, an electromagnetic switch controlling the flow of currentthrough said magnet, and a circuit controlling said electromagneticswitch, established by the connection of the plug-circuit with thecalled line, substantially as set forth.

6. In a telephone-exchange system, the combination with twotelephone-lines extending from substations to a central-ofliceswitchboard, of means at the central ofiice for connecting the linestogether in response to a call from the substation of one of said lines,a magnet and blocking mechanism controlled by said magnet forinterfering with the transmission of telephonic voice-currents betweenthe telephones at the respective stations, whereby telephoniccommunication between said stations may be prevented, an electriccircuit including said magnet with a source of current, a toll-counterat the substation of the callingline adapted to be manually operated, adevice actuated in the operation of said toll-counter for controllingsaid blocking mechanism, whereby the operative condition of the systemmay be restored upon the operation of said toll-counter, and meanscontrolled through the agency of a switch at the called station forchanging the electrical condition of the circuit including said magnet,substantially as set forth. I

7 The combination with a telephone-line extending from a substation to acentral ofiice and a pair of plugs and a plug-circuit for connectingsaid line with another line, a polarized electromagnet at the substationof the firstmentioned line and blocking mechanism controlled by saidmagnet for rendering the telephone at said station inoperative, saidmagnet being adapted to actuate said blocking 1 mechanism only whentraversed by current of connection of said battery with the calling-1line, whereby said blocking mechanism is operated and the callingsubscriber compelled to operate his toll-counter in order to use histelephone, substantially as set forth.:

8. The combination with a telephone-line and a service-meter therefor,of a blocking device adapted to prevent the use of the telephone-lineand a manually-operated appliance controlling said meter and saidblocking device to render the blocking device ineffective, a signal atthe substation of the line and actuating-circuits therefor associatedwith the line, an electromagnetic switch controlling saidactuating-circuits, and circuit connections of the magnet of said switchmade operative .in establishing connection with the called line;substantially as described.

V 9. The combination with a telephone-line and a service-meter therefor,of a manuallyoperated part at the substation adapted to actuate theservice-meter, a blocking device for preventing the use of the telephoneand a controlling-magnet for said blocking device, said blocking devicebeing also controlled by said manuallyactuated part to render theblocking device inoperative in the movement .of the service-meter, anelectrically-controlled signal at the substation and an electric circuitcontrolling said magnet of the blocking device and said signal, and aswitch made op- .erative in establishing connection with a line calledfor for closing said circuit; whereby the establishment of connectionwith the called station is signaled tothe calling-station and thetelephone at the latter station is blocked 10. The combination with acalling and a called line extending from a substation to a centraloflice and link conductors for uniting said lines, of a visible signalat the calling-.

station, an electromagnetic switch at the cen tral oflice and a'sourceof current controlled .thereby for operating said visible signal, a

switch at the called station, and means controlled by saidlast-mentioned switch for operating said electromagnetic switch, as setforth.

11. In combination two telephone-lines and link conductors for unitingthem, a visible signal at the calling-station and a circuit therefor, anelectrically-actuated switch controlling said circuit, said switch beingitself controlled by the telephone-switch at the called station, and anelectric locking device on said switch actuated in the initial responseof the switch adapted to prevent its further operation, the circuit ofsaid locking device beingcompleted in registering contacts of the linkconductor andthe called line; whereby the signal at the calling-stationis operated in the use of the telephone at the called station, but isthereafter placed out of control of the called station duringthecontinuance of'the connection, as described.

12. In combination two telephone-lines and link conductors uniting them,a service-meter of the calling-line and a blocking mechanism controllingthe use of the telephone at the calling-station, a manually-operatedpart for actuating said service-meter and said blocking device to renderthe blocking device inoperative, an electromagnet actuating the blockingdevice to prevent the use of the telephone, and a circuit of saidelectromagnet, an'electrically-actuated switch controlling the circuitof said electromagnet, said" switch being itself controlled by thetelephone-switch of the called station, and a locking-circuit of saidswitch closed when the switch is actuated, said locking-circuit beingcompleted in registering contacts associated with the link conduc torand the called line; whereby the blocking mechanism of the calling-lineis controlled from the called station at the initial movement of thetelephone-switch at the latter station, but is free from such controlthereafter during the existence of the connection, as described.

13. In an automatic connection-registering system fortelephone-exchanges, the combination with the central-ofiice apparatus,of means for automatically altering the flow of current in thecalling-subscribers line controlled from the called-.subscribersstation, and at the calling-subscribers station, registering 'appara tuscomprising a relay connected to line, the armature of which is designedto be operatively actuated by current of predetermined character, acontrolling-circuit extending to the instrument controlled, adapted tobe opened and closed by said relay, whereby said instrument may berendered temporarily inoperative, a meter device and means for actuatingthe meter and for restoring the controlled instrument to service,substantially as set forth. a

14:. In a telephone system, the combination with the calling-subscribersinstrument, of a polarized relay device adapted, when energi'zedbycurrent of one polarity, to render the instrument temporarilyinoperative, a registering appliance, means for jointly restoring theinstrument to service and for actuating the registering appliance,central-office apparatus for effecting the desired connections, and inaddition thereto, automaticallyactuated circuit-controlling apparatusgoverned by the called subscriber, adapted to supply current of therequisite polarity to the said relay device, substantially as set forth.

15. In combination with a telephone-exchange system, a reversing-relayprovided in the answering side of the cord-circuit, said relay beingautomatically controlled by the called subscriber, and at thecalling-subscribers instrument, a polarized relay adapted to respond tocurrent from the relay and temporarily render the instrumentinoperative, a call-registering appliance and means for acuating thelatter and for restoring the subscribers instrument to service,substantially as set forth.

16. In combination with a telephone system, a reversing-relay providedin the answering side of the operators cord-circuit, said relay beingautomatically controlled by the called subscriber, under normalconditions, a nullifying-key connected with said relay, and at thecalling-subscribers station, a polarized connection-registeringappliance adapted to be actuated by the reversing-relay, substantiallyas set forth.

17. In combination with a telephoneexchange system, a reversing-relay inthe answering side of the cord-circuit, means for autdmaticallyenergizing the same when the called subscriber answers, and at thecallingsubscribers station, a telephone instrument, a polarizedelectromagnet, an armature, a controlling-circuit governed thereby,adapted to shunt the subscribers transmitter, a countingtrain andmanually controlled means for jointly actuating the counting-train andfor breaking the shunt-circuit, substantially as set forth. I

18. In a telephone-exchange system, the combination with a su bscribersinstrument, of a relay device adapted to shunt the transmittercircuitthereof, a counting-train, manuallycontrolled means for jointlyactuating the counting-train and opening the shunt-circuit,central-ofiice apparatus and in the answering side of the cord-circuit,means controllable from the called-subscribers station for actuatingsaid relay device to close the shunt-circuit of the transmitter,substantially as set forth.

19. The combination with a calling and a called line and apparatus at acentral office for uniting them, of a toll device for the callingline,an automatic blocking device adapted when actuated to render the systeminoperative for telephonic communication between the calling and thecalled stations, apparatus controlled at the called station for settingsaid blocking device, and means actuated in the operation of said tolldevice for restoring to their normal condition the parts affected bysaid blocking device, whereby the operative condition of the system isreestablished. I

20. The combination with a calling and a called line and means at thecentral office for uniting them, of a toll device at the substation ofthe calling-line adapted for manual operation by the subscriber, ablocking device adapted when actuated to prevent telephoniccommunication between the calling and the called stations, meanscontrolled through the agency of the telephone-switch at the calledstation for operating said blocking device, and means controlled in theoperation of the toll device for counteracting or making inoperativesaid blocking device.

21. The combination with a calling and a called line and apparatus at acentral switchboard for uniting them, of a toll device at the substationof the calling-line, an electromagnetic switch at the central ofliceadapted to change the electrical condition of the callingline, anelectromagnet at the calling-substation responsive to the changeproduced by said electromagnetic switch, mechanism controlled by saidelectromagnet for rendering the apparatus at the calling-stationinoperative for telephonic purposes, means controlled at the substationof the called line for setting said electromagnetic switch, and meanscontrolled in the actuation of said toll device for restoring saidswitch;

22. The combination with a telephone tollline extending from asubstation to a central oflice, of a toll device at the substationadapted for manual operation by the subscriber, a polarizedelectromagnet associated with the toll device and connected with thetelephone-line, an armature for said electromagnet controlling theoperation of the toll device, said armature also controlling a switchfor rendering the telephone apparatus inoperative, a plug-circuit at thecentral office adapted to connect the toll-line with another line inresponse to a call initiated from "the toll-line, a source of current inthe plug-circuit, a blocking-switch controlling the application ofcurrent to the toll-line and adapted when actuated to direct currentover the toll -line to energize said polarized electromagnet, wherebythe armature of said magnet is moved to release the toll device andsimultaneously to render the telephone apparatus at thecallingsubstation inoperative, a switch at the called station, asupervisory relay for the called line at the central oflice, controlledby said switch at the called station, a circuit for the blocking-switchcontrolled through the agency of said supervisory relay, and means,controlled in the operation of the toll device at thecalling-substation, for reversing the operation of the armature of theelectromagnet, to reestablish the operative condition of the telephoneapparatus, substantially as set forth.

In witness whereof I hereunto subscribe my name this 5th day of July,1900.

FRANK R. MCBERTY.

Witnesses:

P. B. CLENDTBNING, D. E. WILLETT.

